摘要:
The present invention refers to a method and a bit stream decoding unit for bit stream decoding. The bit stream comprises a number of consecutive samples. In order to provide a possibility of fast and in particular reliable decoding of the bit stream, it is suggested that
a detection window comprising a number of samples is defined; the detection window is positioned at certain positions on the bit stream in order to comprise certain samples with respective sample values; a majority voting is applied to the sample values comprised by the detection window; and according to the result of the majority voting the bit stream is decoded and respective bit values are generated.
摘要:
The invention refers to a method for monitoring a communication media access schedule of a communication controller (5) of a communication system (1) by means of a bus guardian (6). The communication system (1) comprises a communication media (2) and nodes (3) connected to the communication media (2). Each node (3) comprises a communication controller (5) and a bus guardian (6) assigned to the communication controller (5). Messages are transmitted among the nodes (3) across the communication media (2) based on a cyclic time triggered communication media access scheme. In order to provide a mechanism which allows the bus guardian (6) to monitor the communication media access scheme of the communication controller (5) even during startup of the communication it is suggested, that the bus guardian (6) has a priori knowledge about possible deviations from the communication media access schedule during startup of the communication and that the bus guardian (6) during startup makes use of the a priori knowledge to distinguish between an allowed deviation and a forbidden deviation caused by a failure of the communication controller (5).
摘要:
Method for transmitting data within a communication system, the communication system comprising a communication media and a number of nodes connected to the communication media, the data being transmitted across the communication media within a communication cycle comprising a number of time slots assigned to one or more nodes of the communication system. In order to provide a possibility for a data transmission within communication cycles, which can satisfy the demands in communication systems for safety critical applications, too, it is suggested, that the communication cycle is initiated by an external event. The external event can be caused by manually setting a bit by a host, by a configurable timer in a controller host interface (CHI) or by an external trigger.
摘要:
The invention refers to a method for synchronizing clocks in a distributed communication system comprising at least one communication media and a number of nodes connected to the communication media. The nodes comprise the clocks. In order to provide a possibility of synchronizing the clocks of the nodes with a high precision and at the same time tolerating high deviations in clock rate, it is suggested that for synchronizing the clocks differences in offset of the clocks as well as differences in rate of the clocks are corrected.
摘要:
Method for transmitting data within a communication system, the communication system comprising a communication media and a number of nodes connected to the communication media, the data being transmitted across the communication media within a communication cycle comprising a number of time slots assigned to one or more nodes of the communication system. In order to provide a possibility for a data transmission within communication cycles, which can satisfy the demands in communication systems for safety critical applications, too, it is suggested, that the communication cycle is initiated by an external event. The external event can be caused by manually setting a bit by a host, by a configurable timer in a controller host interface (CHI) or by an external trigger.
摘要:
The present invention refers to a method and a bit stream decoding unit for bit stream decoding. The bit stream comprises a number of consecutive samples. In order to provide a possibility of fast and in particular reliable decoding of the bit stream, it is suggested that
a detection window comprising a number of samples is defined; the detection window is positioned at certain positions on the bit stream in order to comprise certain samples with respective sample values; a majority voting is applied to the sample values comprised by the detection window; and according to the result of the majority voting the bit stream is decoded and respective bit values are generated.